treechildren::-moz-tree-checkbox { 
	list-style-image: none; 
}
treechildren::-moz-tree-checkbox(checked) { 
	list-style-image:
	url("chrome://global/skin/checkbox/cbox-check.gif"); 
}
treechildren::-moz-tree-checkbox(disabled) { 
	list-style-image:
	url("chrome://global/skin/checkbox/cbox-check-dis.gif"); 
}
